java script response login
FB.getLoginStatus(function(response) {
if (response.status === 'connected') {
// The user is logged in and has authenticated your
// app, and response.authResponse supplies
// the user's ID, a valid access token, a signed
// request, and the time the access token
// and signed request each expire.
var uid = response.authResponse.userID;
var accessToken = response.authResponse.accessToken;
} else if (response.status === 'not_authorized') {
// The user hasn't authorized your application. They
// must click the Login button, or you must call FB.login
// in response to a user gesture, to launch a login dialog.
} else {
// The user isn't logged in to Facebook. You can launch a
// login dialog with a user gesture, but the user may have
// to log in to Facebook before authorizing your application.
}
});